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ADCS7476, ADCS7477, ADCS7478

SNAS192G – APRIL 2003 – REVISED MAY 2016

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Device Functional Modes (continued)

Figure 30. Entering Normal Mode

To exit shutdown mode, bring CS back low. Upon bringing CS low, the ADCS747x begins powering up. Power

up typically takes 1 µs. This microsecond of power-up delay results in the first conversion result being unusable.

The second conversion performed after power-up, however, is valid, as shown in Figure 30.

If CS is brought back high before the 10th falling edge of SCLK, the device returns to shutdown mode. This is

done to avoid accidentally entering normal mode as a result of noise on the CS line. To exit shutdown mode and

remain in normal mode, CS must be kept low until after the 10th falling edge of SCLK. The ADCS747x is fully

powered up after 16 SCLK cycles.